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DURANGO, Colo. — A skier at Purgatory Resort died Saturday after colliding with a tree, according to the resort.

Ski patrol received a call of an injured skier on Demon, an intermediate trail, just after 3 p.m.

Patrollers were in the area and responded immediately, finding a 34-year-old woman unconscious. The woman was wearing a helmet when she slammed into the tree.

An ambulance and air medical transport were called to the scene and the helicopter landed about 4 p.m. on U.S. 550 near the entrance of the resort. The woman was pronounced dead at approximately 4:35 pm.

“All of us at Purgatory Resort are deeply saddened by this rare and tragic accident, and we extend our deepest sympathies to the friends and family of the skier,” resort general manager Colin McBeath said.

A routine investigation into the death is being conducted. The identity of the woman has not been released.

It’s the sixth ski-related death at Colorado resorts this season.

On Dec. 19, 48-year-old Kevin Pitts of Longmont died at Breckenridge Ski Resort after colliding with a tree on Alpine Alley run, not far from the Imperial Express SuperChair.

On Dec. 29, a 40-year-old Texas woman died after falling from a chairlift at Ski Granby Ranch that was caused by mechanical problem.

Kelly Huber of San Antonio fell 25 feet and was pronounced dead at a Granby hospital. Her 12-year-old and 9-year-old daughters were injured in the fall.

On Jan. 12, 47-year-old Sean Haberthier of Denver, was reported missing from Breckenridge. The next day, he was found on Lower Boneyard, an expert run not far from the Peak 8 lift.

Haberthier was taken to St. Anthony Summit Medical Center in Frisco where he was pronounced dead of a severe skull fracture after skiing into a tree. He was not wearing a helmet.

On Feb. 10, a 26-year-old man from Mexico died on an advance run while skiing at Breckenridge. The resort’s ski patrol responded to the incident, but the man was declared dead at the scene.

The man has not been identified. The resort did not say where on the property the man died or the circumstances surrounding his death.

On Feb. 15, a 17-year-old girl died after crashing into a tree at Winter Park Resort.